Domestic supply chain
A Southwest-first manufacturing plan with dual-source qualification at each critical stage.
Southwest-engineered propulsion
Small package.
Serious sting.
The 235 cc KB‑SS—built around exceptional power density, field serviceability, and the missions where every gram matters.
235cc nominal displacement
27hp target output
2.45hp/lb target power-to-weight
Performance targets. Final production figures pending validation.
01 — The machine
Purpose built.
Nothing extra.
The Killer Bee platform is a clean-sheet compact engine for experimental aviation and uncrewed systems. It is focused on what operators need most: strong power-to-weight performance, direct service access, and power where it counts.
KB‑SS performance
Power without excess.
Every part of the KB‑SS program is measured against the same goal: deliver serious output in a compact, serviceable package.
- Displacement
- 235 cc nominal
- Output
- 27 hp target
- Power-to-weight
- 2.45 hp/lb target
The air is the final judge
Designed low.
Proven high.
Development pathDyno → Air
System priorityPower / Mass
StandardEvidence first
Preview footage: Mixkit
02 — Built to prove it
Engineering you can inspect.
We publish the numbers that matter and label development targets honestly. The product story will grow from test data—not adjectives.
Test-led development
Dyno, thermal, endurance, inspection, and traceability gates before production claims become promises.
Designed for service
Model-specific documentation, transparent lead times, parts lookup, and direct technical support.
04 — Choose your sting
Two missions.
One platform.
The same compact engine platform, calibrated for two very different priorities. Final performance figures and launch pricing remain subject to validation.
Killer Bee
Scout
The accessible entry into Killer Bee propulsion: a simpler, value-led configuration focused on dependable power, serviceability, and a lower acquisition target.
KB‑SS
Series
The uncompromised flagship program—developed to challenge the category’s best installed power-to-weight performance. Comparative claim pending validated production data.
Killer Bee development program
Get in the first flight.
Reserve a prototype build position with a deposit. Final configuration, price, mission suitability, and delivery timing are confirmed directly before production.
Prototype build deposit
$500 USD- Priority configuration review
- Direct program updates
- Applied to your final invoice
Square-hosted checkout. Card details never touch this site.
05 — Stay mission-ready
Support is part
of the engine.
Serial-aware manuals, parts, service requests, and honest turnaround targets will live in one place as the program enters production.
Talk to the program →